A seamless design of flowers remixed from a jpg on Pixabay by Prawny.
Source Firkin
Farmer could be some sort of fabric pattern, with a hint of green.
Source Fabian Schultz
Could remind you a bit of those squares in Super Mario Bros, yeh?
Source Jeff Wall
A free seamless background image with a texture of dark red "canvas". It should look very nice on web sites.
Source V. Hartikainen
Zero CC tileable hard cover red book, scanned and made by me. CC0
Source Sojan Janso
Thin lines, noise and texture creates this crisp dark denim pattern.
Source Marco Slooten
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Here's an yet another background for websites, with a seamless texture of wood planks this time.
Source V. Hartikainen
From a drawing in 'Heroes of North African Discovery', Nancy Meugens, 1894.
Source Firkin
Formed from a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Colour version of the original seamless pattern.
Source Firkin
CC0 and seamless wellington boot pattern.
Source SliverKnight
A seamless background colored in pale orange. It has a paper like texture with diagonal grid pattern.
Source V. Hartikainen
I love these crisp, tiny, super subtle patterns.
Source Badhon Ebrahim
From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
More in the paper realm, this time with fibers.
Source Jorge Fuentes
A fun-looking elastoplast/band-aid pattern. A hint of orange tone in this one.
Source Josh Green
Light gray version of the Binding pattern that looks a bit like fabric.
Source Newbury
Remixed from a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
A bit like smudged paint or some sort of steel, here is scribble light.
Source Tegan Male
Remixed from a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
Stefan is hard at work, this time with a funky pattern of squares.
Source Stefan Aleksić